Given the decline in business, a small furniture store probably wouldn't have a lot of issues with customers maintaining distance. Most furniture stores are not crowded even in normal times. This would probably be true for many other types of retail stores as well. It's not zero risk of course, but nothing in life ever is.
Perhaps some shoppers would make a point of shopping to help out, or just aren't that concerned and want to get out, or want to furnish their new house/apartment that they've been in for the past 6 weeks completely empty.
More people are starting to wonder if there's a viable option between "full lockdown, groceries only" and "free-for-all". Since some states are relaxing restrictions I guess we'll start to find out.